net.sf.molae.pipe.tree
Interface CompositionView<T>

All Known Implementing Classes:

CompositionView.DefaultCompositionView

public interface CompositionView<T>

A Composition View defines for each class the children to be regarded.

See Also:

Composition, DepthFirstIterator

Nested Class Summary

static class

CompositionView.DefaultCompositionView Default implementation of a CompositionView.

Field Summary

static CompositionView<Object>

DEFAULT_COMPOSITION_VIEW The default composition view.

Method Summary

Collection<? extends T>

getChildren(T obj) Returns the components of the specified object.

Field Detail

DEFAULT_COMPOSITION_VIEW

static final CompositionView<Object> DEFAULT_COMPOSITION_VIEW

The default composition view.

1. If the specified object is a Collection, it is returned itself.
2. If it is a Composition, the component collection is returned.

Any other object is not recognized and returns null.

Method Detail

getChildren

Collection<? extends T> getChildren(T obj)

Returns the components of the specified object.

Parameters:

obj - an object

Returns:

the components of the specified object, null or an empty collection if it has no components.